Some quick observations:

Considering Twitter’s strong growth, it won’t be long until it’s bigger than Sweden.

Orkut is larger (barely) than France.

And finally: Does EVERYONE in the Philippines have a Friendster account? Both Friendster and the Philippines have a population of 90 million. We had heard it’s popular there, but still… 🙂

If we view the Internet as a virtual companion to the real world, then social networks could be considered countries in this virtual world. And as you can see, these countries are getting enormous. It will be interesting to see how this develops over the next few years. How large can they get?

Just letting you know, that the statistics you have for MySpace are extremely outdated (the 100 millionth account was created in mid 2006 according to Wikipedia, but it has increased by nearly threefold since then) The current number of profiles in my network (mostly because they are friends with Tom) is 262,763,638. That means there is at least that many user accounts on MySpace. That would mean it is closer to the population of the United States, and the largest Social Networking site in the world.